Chapter 2

C00–D49: Neoplasms

Neoplasms diagnostic classification updated for 2026.

Internal Codes
  • C76.5

    Malignant neoplasm of lower limb

  • C76.50

    Malignant neoplasm of unspecified lower limb

  • C76.51

    Malignant neoplasm of right lower limb

  • C76.52

    Malignant neoplasm of left lower limb

  • C76.8

    Malignant neoplasm of other specified ill-defined sites

  • C77

    Secondary and unspecified malignant neoplasm of lymph nodes

  • C77.0

    Secondary and unspecified malignant neoplasm of lymph nodes of head, face and neck

  • C77.1

    Secondary and unspecified malignant neoplasm of intrathoracic lymph nodes

  • C77.2

    Secondary and unspecified malignant neoplasm of intra-abdominal lymph nodes

  • C77.3

    Secondary and unspecified malignant neoplasm of axilla and upper limb lymph nodes

  • C77.4

    Secondary and unspecified malignant neoplasm of inguinal and lower limb lymph nodes

  • C77.5

    Secondary and unspecified malignant neoplasm of intrapelvic lymph nodes

  • C77.8

    Secondary and unspecified malignant neoplasm of lymph nodes of multiple regions

  • C77.9

    Secondary and unspecified malignant neoplasm of lymph node, unspecified

  • C78

    Secondary malignant neoplasm of respiratory and digestive organs

  • C78.0

    Secondary malignant neoplasm of lung

  • C78.00

    Secondary malignant neoplasm of unspecified lung

  • C78.01

    Secondary malignant neoplasm of right lung

  • C78.02

    Secondary malignant neoplasm of left lung

  • C78.1

    Secondary malignant neoplasm of mediastinum

  • C78.2

    Secondary malignant neoplasm of pleura

  • C78.3

    Secondary malignant neoplasm of other and unspecified respiratory organs

  • C78.30

    Secondary malignant neoplasm of unspecified respiratory organ

  • C78.39

    Secondary malignant neoplasm of other respiratory organs

  • C78.4

    Secondary malignant neoplasm of small intestine

  • C78.5

    Secondary malignant neoplasm of large intestine and rectum

  • C78.6

    Secondary malignant neoplasm of retroperitoneum and peritoneum

  • C78.7

    Secondary malignant neoplasm of liver and intrahepatic bile duct

  • C78.8

    Secondary malignant neoplasm of other and unspecified digestive organs

  • C78.80

    Secondary malignant neoplasm of unspecified digestive organ

  • C78.89

    Secondary malignant neoplasm of other digestive organs

  • C79

    Secondary malignant neoplasm of other and unspecified sites

  • C79.0

    Secondary malignant neoplasm of kidney and renal pelvis

  • C79.00

    Secondary malignant neoplasm of unspecified kidney and renal pelvis

  • C79.01

    Secondary malignant neoplasm of right kidney and renal pelvis

  • C79.02

    Secondary malignant neoplasm of left kidney and renal pelvis

  • C79.1

    Secondary malignant neoplasm of bladder and other and unspecified urinary organs

  • C79.10

    Secondary malignant neoplasm of unspecified urinary organs

  • C79.11

    Secondary malignant neoplasm of bladder

  • C79.19

    Secondary malignant neoplasm of other urinary organs

  • C79.2

    Secondary malignant neoplasm of skin

  • C79.3

    Secondary malignant neoplasm of brain and cerebral meninges

  • C79.31

    Secondary malignant neoplasm of brain

  • C79.32

    Secondary malignant neoplasm of cerebral meninges

  • C79.4

    Secondary malignant neoplasm of other and unspecified parts of nervous system

  • C79.40

    Secondary malignant neoplasm of unspecified part of nervous system

  • C79.49

    Secondary malignant neoplasm of other parts of nervous system

  • C79.5

    Secondary malignant neoplasm of bone and bone marrow

  • C79.51

    Secondary malignant neoplasm of bone

  • C79.52

    Secondary malignant neoplasm of bone marrow

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